Say thank you, it's that easy! Probably…

When a person writes a good article - I want to thank him. When a person writes a stupid comment, he accordingly would NOT like to thank him. In quality NOT - the cons works remarkably well - in karma and comments. As a “Thank you,” the pros should work accordingly, as well. But nevertheless, at the end of each useful topic, the number of comments like “Thank you, very useful article” and “Thank you, added to favorites” increases. I understand the author is pleased to see that his post was read, appreciated and appreciated, that others appreciated. Others do not know how others rated by karma (I don’t remember the amount of karma at all, yep?).
Actually the sentence: Somewhere on the sidelines to display “8 users expressed their thanks to the author and 6 users added an article to the favorites”. I see that it would be curious for a certain number of visitors to Habr.